What is principal to reduce earth leakage current with isolation transformer? When isolation transformer is installed in input stage of system, earth leakage current is reduced. the reason is why the leakage current of 2nd stage of isolation transformer does not affect the 1st stage's leakage current. I would like to know the reason. As you know, earth leakage current is a kind of AC. So, How to reduce earth leakage current in case that isolation transformer is used?

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how can we say that stator magnetic field rotates with synchronous speed?can we derive?

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We use ungrounded DC system (220V/110V) for control and protection system in substations etc. Suppose we have long 2 core DC cables running from our DCDB in control room to the load (length of around 2 to 3 km). Do we need to protect these long DC cables from earth leakages or not? If yes how?

5 Answers   Siemens,

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Motor also having losses, we call KW rating. In transformer and generator having losses but we call KVA Rating why?

9 Answers  

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what is distribution board and panel board

3 Answers  

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what is single phase motor?

5 Answers  

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how to make an earthing certificate

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what is frequency transformer?

2 Answers  

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why skin effect is decreases with decrease with frequency? why skin effect occur

5 Answers   Kirloskar,

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what is main difference between live tank and dead tank current transformer?

2 Answers   Atul,

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what is inductive voltage transformer? what is its application and how it differs from capacitive voltage transformer?

1 Answers   NRSC National Remote Sensing Centre,

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How each of the following losses occur in d.c machines (i) copper (2)core (3) windage (4)friction please help me

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